I don't think there's a "Best Avenger", but there is definitely some I prefer. Obviously if they all fought against each other, Hulk would probably win because he's overpowered. But yeah, here's my favs:

At 5/6/12 09:29 AM, SaltshakerClock wrote:
Iron Man is the Batman of the Marvel universe.

No. The Punisher is the Batman of Marvel.

What? No, not even close.
He's a retired FBI agent who serves vengeance to those who need it. He's got the dark personality of batman, but he's not Super Smart, super wealthy, or anything super. He just has FBI training, guns, and can survive in the Marvel universe.

Anyways, the best avenger is Hulk out of all of them. None can compare to his strength, and I believe he managed to wield Thor's hammer once.